I’m actually about 90 miles west of Brunswick, but I’m fairly familiar with the area. Brunswick is in a pretty triathlon friendly area. It’s less than an hour south of Savannah and less than an hour and a half north of Jacksonville, Fla. There are several races in Savannah, and two different sprint series in Jacksonville, in addition to a nice Oly distance race and an X-terra tri. There are also a number of races up 95 in South Carolina.
The running scene is good, with several top notch races nearby of all distances (from 5K up to marathon). You could find a local running race within an hour of Brunswick just about every weekend. You can also find a few informal and loosely organized bike races in nearby Camden County.
The coastal highways around Brunswick can have heavy traffic, but if you get outside of town, you should be able to find some lightly-traveled rural roads that would make for some good cycling. However, it’s very flat and windy on the coast, so prepare for that. You’re not going to find much in the way of hills at all. I don’t know about a cycling club, but I would be willing to bet there is one of some kind. If not, you can find one south in Camden County or north in Savannah.
I don’t know about the swimming scene, though. There is an ocean, of course, and numerous creeks and rivers that I’m sure you could swim in if you wanted to. And you’ve already touched base with the Masters coach, so you know more than me already.
There are also a few charity rides and multisport events on Jekyll Island. There used to be a sprint tri held there, but I think that has been cancelled.
All in all, I think the Golden Isles area is a good place to live. The weather is great, and there are lots of opportunities for training and racing. It’s almost always windy, and it’s oppressively hot in the summer. But winters are mild and the area is beautiful, especially if you’re wealthy enough to live on St. Simons Island or Sea Island. It’s not an urban area, but it’s not the backwoods, either (though Hickville isn’t far away).
Feel free to PM me with any further questions.
RP